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Outline:About aggregate functions in PostgreSQL. Identify common aggregate functions like COUNT, SUM, AVG, MIN, and MAX. Use aggregate functions to summarize data from a table. Handle NULL values in aggregate calculations. Use the Round keyword to limit the digits after the decimal point. Interpret results returned by aggregate queries.
About aggregate functions in PostgreSQL. Identify common aggregate functions like COUNT, SUM, AVG, MIN, and MAX. Use aggregate functions to summarize data from a table. Handle NULL values in aggregate calculations. Use the Round keyword to limit the digits after the decimal point. Interpret results returned by aggregate queries.
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